Over-fire gas-consumer.



0. GERLACH.

OVER FIRE GAS CONSUMER.

APPLICATION FILED FEB.26 191l- 1,277,903. Patented Sept. 3,1918.

Inve nTor.

OSCAR GERLACH, OF PHILELPHIA, PENNSYLVANIA.

OVER-FIRE GAS-CONSUMER.

Specification of Letters Patent.

Patented Sept. 3, 1918.

Application filed February 26, 1917. serial No. 151,069.

To all whom, it may concern:

Be it known that I, OsoAR Gunmen, a c1t1 zen of the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Over-Fire Gas-Consumers, of which the following is a specification.

This device belongs to that class of over fire gas'consumers where the air is carried in a pipe passing through the door aperture, and is discharged above the fire. The lmprovements embodied, in it are directed to making a knock-down device, that can be ad usted readily to various conditions that the erector of over fire gas consumers meets without remodeling, and especially it has decided advantages in the simplicity and directness with which adjustments are made.

Figure 1 is a side elevation of the devlce. Fig. 2 is a front elevation of same. Fig. 3 is a sectional view on line 33 of Fig. 2 showlng the position of the adjoining parts of the common form of heater.

1 is the door plate which has the pipe hole 5 for the air pipe section 10 and has the catches 3, 3, and the latch 6, to engage with the door frame of the heater or stove. This latch is ordinarily of the turning form hav- 1ng the lip 2 and the head 4, connected by the spindle 7 passing through door plate. The door plates can be made in stock and of comparatively few sizes and shapes as heater doors, especially, generally vary little in size or shape. The plate 1 takes the place of the door of the heater, which, however, need not be removed but can simply be opened 'sufiiciently widely to allow the late 1 to be inserted in the door frame. T e air plpe has the section 10 passing through the door and an additional section 11 attached. The position of the pipe 10 in the pipe hole 5, or the length of the pipe 11 or both can be varied so as to bring the air outlet of the pipe 11, in the most advantageous position usually above the middle of the fire. The lugs 8, 8 are carried by the door plate 1, and form a collar and hold the pipe 10, snugly enough to retain it in position, but still allow this pipe to be pushed through the door plate by the erector of the device. The pipe 11 has the downwardly directed mouth 12 which is sufficiently depressed below the level of the pipe 10 to bring it near enough the fire and to hold the air long enough in the upper level of pipe 11 and in pipe 10 to heat the same sufficiently for the purposes of the device.

The adjustment of the device so that the flow of air into the fire box will be in proper amount to consume the gases, when the uptake of the chimney is normal, is secured by varying the length of the outside pipe 15. This pipe is connected to pipe 10 by the elbow 14. By having several lengths of pipe the erector can determine by experiment if needful, the length of this pipe required, but ordinarily the adjustment can be made at the place of sale or stock room with sufiiciently accuracy if the general conditions are known. The damper 16 will serve the heater attendant to regulate the flow of air to suit the exigencies that arise in the use of the device.

In using the device the heater door is opened and the door plate 1 inserted and adjusted so that the catches 3, 3, and latch 6 hold it in position, the pipes 10, 11 and 15 being of suitable length and adjustment for the purposes above described. The device can be knocked down and carried readily even when additional pipe lengths are taken by the erector with him.

I claim:-

The combination with a heater having a fuel door and door frame and a fire box, of a door plate, independent of and removably secured in sand frame, said plate having a pipe hole therethrough and also having ears for engagement with the door frame on. one side of the plate and a catch for engagement with said door frame at another side, a sectional air intake pipe extend ing through the pipe hole in the door plate, said pipe comprising a portion within the fire box having a discharge opening below the hole in the plate, a horizontal portion adjustable horizontally through the hole 1n said plate; an external vertical inlet portion having its inlet opening below the level of the discharge opening and an elbow conmeeting said external and horizontal portions, and a damper in said pipe.

In testimony whereof I aifix my signature.

OSCAR GERLAOH; 

